<script lang="ts" name="TopCategory" setup>
import useStore from '@/store/index'
import { storeToRefs } from 'pinia';
import { watch, watchEffect } from 'vue'
import { useRoute } from 'vue-router'
import GoodsItem from './components/goods-item.vue'
const route = useRoute()
const { category, home } = useStore()
home.getBannerList()
category.getTopCategory(route.params.id as string)

//我们发现参数变化了,模板中的数据没有变化,vue有一个原则(就地复用)
// setup代码只会执行一次,因此需要监听路由的变化
// 解决方案 : watch侦听参数的变化,(没有局部侦听器这个概念)
// watch(() => route.params.id,
//   () => {
//     //console.log("侦听器执行了")
//    // console.log(route.fullPath)
//     // if(/category/$route.params.id === route.fullPath,去分类页面)
//     // if(/category/$route.params.id === "/", 去首页
//     if (route.fullPath === `/category/${route.params.id}`) {
//       category.getTopCategory(route.params.id as string)
//     }
//   }, {
//     immediate: true
//   } )

watchEffect(() => {
  if (route.fullPath === `/category/${route.params.id}`)
    category.getTopCategory(route.params.id as string)
})
// 解构category中的属性
const { topCategory } = storeToRefs(category)
</script>

<template>
  <div class="top-category">
    <div class="container">
      <!-- 渲染面包屑导航 -->
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <XtxBreadItem>{{ category.topCategory.name }}</XtxBreadItem>
      </XtxBread>
      <!-- 轮播图 -->
      <XtxCarousel :slides="home.bannerList" style="height: 500px" autoplay :duration="3000" />
      <!-- 所有二级分类 -->
      <div class="sub-list">
        <h3>全部分类</h3>
        <ul>
          <li v-for=" item in topCategory.children" :key="item.id">
            <a href="javascript:;">
              <img :src="item.picture">
              <p>{{ item.name }}</p>
            </a>
          </li>
        </ul>
      </div>
      <!-- 分类关联商品 -->
      <div class="ref-goods" v-for="item in category.topCategory.children">
        <div class="head">
          <h3>- {{ item.name }} -</h3>
          <p class="tag">温暖柔软，品质之选</p>
          <XtxMore />
        </div>
        <div class="body">
          <GoodsItem v-for="goods in item.goods" :key="goods.id" :goods="goods" />
        </div>
      </div>
    </div>
  </div>
</template>

<style scoped lang="less">
.ref-goods {
  background-color: #fff;
  margin-top: 20px;
  position: relative;

  .head {
    .xtx-more {
      position: absolute;
      top: 20px;
      right: 20px;
    }

    .tag {
      text-align: center;
      color: #999;
      font-size: 20px;
      position: relative;
      top: -20px;
    }
  }

  .body {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    padding: 0 65px 30px;
  }
}

.top-category {
  h3 {
    font-size: 28px;
    color: #666;
    font-weight: normal;
    text-align: center;
    line-height: 100px;
  }

  .sub-list {
    margin-top: 20px;
    background-color: #fff;

    ul {
      display: flex;
      padding: 0 32px;
      flex-wrap: wrap;

      li {
        width: 168px;
        height: 160px;

        a {
          text-align: center;
          display: block;
          font-size: 16px;

          img {
            width: 100px;
            height: 100px;
          }

          p {
            line-height: 40px;
          }

          &:hover {
            color: @xtxColor;
          }
        }
      }
    }
  }
}
</style>